| A | B |
|---|
| Fixed pulley makes work easier by | changing direction |
| fixed pulley does not | increase or decrease speed of rope |
| Knee is an example | Lever |
| Centripetal acceleration | Causes satellites to orbit |
| Slow down, speed up, change directions | evidences of acceleration |
| Unrestrained passengers in vehicle that stops suddenly | Continue to move straight ahead |
| Input force of 5 N, output force of 10 N | Actual mechanical advantage of 2 |
| Rope moves object 1 m, when person pulls rope of pulley 4 m | Ideal mechanical advantage of 4 |
| MA of 2, IMA of 4 | Efficiency of 50 % |
| MA of 3, IMA of 4 | Efficiency of 75% |
| Pulley system with 4 supporting ropes | Pulley system with IMA of 4 |
| The speed of an object that is falling | Increases rapidly until it comes to a sudden stop |
| Acceleration of an upward bouncing ball | Decreases as the ball rises |
| Highest point of a transverse wave | Crest |
| Seismic waves | both transverse and compressional |
| Surface waves of an earthquake | get energy from the primary and secondary waves |
| waves that don't appear to be moving | standing waves |
| Tuning fork struck by a mallet | Vibrates at its own natural frequency |
| An apple on the ground has | Chemical potential energy |
| Metals | Conduct thermal energy well |
| Radiation | Does not need a medium to transfer energy |
| Conduction | Thermal energy transferred by objects in direct contact |
| Convection | Transfers energy by moving particles in a fluid |
| Only one path for electrons to flow through | Series circuit |
| More than one path for electrons to flow through | Parallel circuit |
| Gamma rays | break down molecules and cells |
| TV stations transmit | Radio waves |
| Inertia | tendency of object to resist change in motion |
| Highest point a ball reaches when thrown up | Point at which a ball has greatest Potential Energy |
| Destructive Interference | May result in zero amplitude |
| More turns in primary coil than secondary coil | Step down transformer |
